Oil-engine control



Feb. 21, 1928.

c. B. JAHNKE OIL ENGINE CONTROL 2 Sheets-Sheet 1 Filed Aug. 14. 1924 Illlllll l INVENTOR 6701mm )3. JAM/m5 ATTORNEY Feb. 21, 1928.

C. B. 'JAHNKE OIL ENGINE CONTROL Filed Aug. 14. 1924 2 Sheets-Sheet 2INVENTOR CHARLES E. J/m/vnE BYE &

ATTORNEY Patented Feb. 21, 1928. g

UNITED STATES CHARLES B. JAHNKE, OI BELOIT, WISCONSIIET, ASBIGNOB TOFAIRBANKS, HORSE & 60.,

OF CHICAGQ ILLINOIS, A CORPORATION OF ILLINOIS.

OIL-ENGINE CONTROL.

Application filed August 14, 1824.' Serial No. 732,081.

My invention relates to deflecting lates for controlling the spray offuel as injected into the pre-combustion chamber of an internalcombustion engine, and more particu- I larly relates to improvementsinthat type of apparatus disclosed in U. S. Patent 1,337,- 771 issued toHobart & J ahnke.

' 'I he object of my invetion is to provlde means on such a deflectingplate for removing any carbon deposit w ich may have accumulated on theinjector nozzle.

Another ob'ect of my invention is to provide a contro lable method ofoperating an internal combustion engine at light loads 16 throu h theuse of such deflecting plates where y a greater economy and efliciencymay be secured at those loads.

Another object of my invention is to provide such deflecting plateswhich are detachable from the controlling means, therebymaking itpossible to use in the construction of these plates special types ofheat-resisting material, such as nichrome and the like. Althoughmyinvention consists lar ely in the construction and arrangement 0 partshereinafter described and articularly pointed out in the claims, yet I 0not limit my invention to the precise form, construcac tion orarrangement of parts shown or the several parts thereof, inasmuch asvarious alterations may be made without changing the scope of myinvention.

The further objects and advantages of my invention will a pear from thefollowing descriptions and rawings of m device. In the drawin Fig. 1 isa sectional v ew of the combiis ion end of an internal combustion engineemploying an approved. form 0 of my device. Fig. 2 is an enlargedsectional view of the deflecting device as shown in Fig. 1. Fig. 3 is asectional view of the deflectional device shown in Fi%. 1, shown in itsout-of-action position. igs. 4 and 5 5 are of an ap roved form ofdeflect on plate. Figs. 6, 7 and 8 are views partially in sect on of amodified form of my deflectionaldevice, and Figs. 9, 10 and 11 are viewsof another modified form of my deflectional device.

Referring by numerals to the drawings,

' 10 designates apro-combustion chamber which may .be of any approvedtype and into which the fuel is injected by means of the injector 11,which may of any suitable form, preferably of the singledeflecting plate13 may the face of the nozzle of the injector 11 and tube type having afuel inlet such as 21. In con unction with the chamber 10 may beemployed a temporary hot mechanism as hot tube 12, set forth in PatentNo. 1,159,- 341, issued November 2, 1915, and which is ada ted to beheated from the'outside by a torc or other suitable mechanism for thepurpose of starting. 13 desi nates a deectin plate of the type set orthin Patent. i 0. 1,337,771, issued April 20, 1920, which is controlled byan suitable means such as the rod 14 and the andle 15 for the purpose ofdeflecting the flow of fuel from the nozzle of the injector 11 towardsthe hot tube'12 when the engine is being started. It is evident that byturnin the handle 15, this moved from the position shown in Fi 2, whichis the normal position for startlng, toward that shown in Fig. 3, inwhich osition the deflecting plate is entirely out of the line of flowofthe fuel from the injector 11. This deflecting plate may be employed forurposes other hanh starting which will be hereinafter set ort It hasbeen found that in employing low grade fuel oils that there is atendency with many of them towards a formation of a considerable depositof carbon on the end of the nozzle of the injector 11. It is evidentthat this carbon formation interferes with the successful operation ofthe engine, and I haveprovided a means for removing this formationwhenever desired by the use of a projection 16 on the deflection plate13, so constructed and so placed that when the handle 15 is turned fromthe position as shown in Fig. 3 to the position as shown in Fig. 2, theprojection 16 will pass across O5 in close proximity thereto, the resultbeing that any carbon deposit on the end of the nozzle of the injector11 will be scraped off by the projection 16. It is evident that thispfi'ojection may be of any suitable'form or s a e.

Eben the engine is running at or near full load, the deflection plate isreferabl removed from the path of the in ected fue by means of thehandle 15 and rod 14. I have found,however, that when operating at lightloads itis advantageous to introduce this deflection plate in the lineof flow of the injected fuel, the result being that the fuel isdeflected or spattered onto the walls to enter the hot tube, as is thecase when starting the engine. In order to overcome this difliculty, Iprefer to employ a deflecting plate with a deflecting surface which hasa variable degree of angularity with respect to the axis of the plate.One form of such a plate is shown in Figs. 6, 7 and 8. 17 denotes thehub of the plate which may be attached to the rod 14 by means of setscrews or pins passing through the hole 18. At 16 is shown theprojection or scraper for the purpose of removing carbon deposit, and at19 is shown the surface upon which the fuel preferably impinges duringstarting. The angle of this surface 19 with res ect to the axis of theplate 13 is such that the fuel will be deflected into the hot tube 12.The surface 20 into which the surface 19 merges, has, however, .anangular disposition with respect to the axis of the plate 13 whichvaries from the angular disposition of the surface 19 sufficiently sothat the fuel will not be deflected into the tube 12 but onto theinnersurface of the pre-combustion chamber 10. It is evident, therefore,that by employing a deflecting surface on the plate 13 which has avarying angularity with respect to the axis of the plate, and byadjusting the position of this surface below the injector 11, I maydeflect the flow of the fuel from the injector 11, either into the hottube 12, such as would be done at starting, or onto the walls of thecombustion chamber, such as would be done when to make these running atlight. loads.

In Figs. 9, 1d and 11 I have shown a modified form of this deflectingplate in which a plurality of deflecting surfaces are emplo ed oneitherside of projection 16, one sur ace being emplo ed for starting, theother for running at ight loads. It is evident that there are a numberof forms which may be employed to accomplish the purposes as set forth.

I have found it desirable to make these plates of some heat-resistingmaterial such as nichrome, for example, and, in order to save materialin this construction, I prefer lates detachable as shown. It is evident,owever, that they may be made integral with the controlling means andstill be within the scope of my invention.

I claim: I

1. An adjustable, plate ada ted to deflect at a plurality of selectedang es, the flow of fuel emitted from the injector nozzle of an internalcombustion engine, abrading means on said plate for 'removmg' carbondeposit on the fuel nozzle.

2. In combination with a' fuel injector nozzle in an internal combustionengine, means for removing the carbon deposit from the nozzle,comprising a scraper member adapted to be moved across the end of thenozzle, said member comprising a plurality of fuel deflecting surfaces,each disposed at a different angle to said nozzle.

3. A member adapted selectively to de fiect in one of severalpredetermined directions, the ow of fuel emitted from the injectornozzle in an internal combustion engine, said member comprising aplurality of deflecting surfaces set at diflerent angles to said nozzle,and a scraper adapted to be moved across the end of the nozzle.

4. A detachable deflecting plate adapted to divert selectively at aplurality of different angles, the flow of fuel emitted from theinjector nozzle in an internal combustion engine, said plate comprisingfuel deflectin surfaces and a scraper adapted to be move across the'endof the nozzle.

5. A deflecting plate. adapted to deflect the flow of fuel emitted fromthe injector nozzle in an internal combustion engine, a deflectingsurface on said plate having a plurality of different degrees ofangularity with respect to the axis of said nozzle, said platecomprising a cleaning member for said nozzle.

6. A movable plate adapted to divert at one of a lurality of angles, theflow of fuel emitted rom the injector nozzle'in an internal combustionengine, a scrapin edge on said plate, adapted for cleaning said nozzle,a deflecting surfaceoon said plate having varying degrees of angularitywith respect to the axis of said-nozzle, means for con trolling theposition of said plate with respect to the injector nozzle.

7. A movable plate adapted to deflect the flow of fuel emitted from theinjector nozzle in an internal combustion engine, a plurality ofdeflecting surfaces on-said plate, said surfaces being of differentdegrees of angularity with respect to the axis of said nozzle and anozzle and in close proximity thereto, for the removal of solid deposit.

9. In an internal combustion en 'ne in combination with a precombustionc amber an injector extending through the wall combination with athereof, a deflecting plate having deflecting surfaces of variousdegrees of angularity with respect to the path of injection and adaptedto deflect at predetermined angles, the flow of fuel from the injectornozzle, a scraper on said plate adapted to be moved across the face ofthe nozzle\for removing solid deposits therefrom, a manual positioningmeans and a resilient retention element for said plate, external to saidengine.

10. In an internal combustion engine in recombustion chamber, aninjector extendln through the wall thereof, a deflecting p ate havingdeflecting surfaces of several different degrees of anlarity with resect to the axis" of the injector and adap to deflect the flow of fuelfrom the injector nozzle, according to the surface interposed in thefuel stream, a scraper integral with said plate adapted to be movedacross the face of the nozzle and in close proximity thereto to cleansaid nozzle, and manually controlled means extending through the wall ofsaid chamber for varying the relative position of said plate to saidnozzle.

CHARLES B. JAHNKE.

